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Title: Disordered polymer antireflective coating for improved perovskite photovoltaics
Authors: Thangavel, Nivethaa R.
Adhyaksa, Gede W. P.
Dewi, Herlina A.
Tjahjana, Liliana
Bruno, Annalisa
Birowosuto, Muhammad D.
Wang, Hong
Mathews, Nripan
Mhaisalkar, Subodh
Keywords: Engineering
Issue Date: 2020
Source: Thangavel, N. R., Adhyaksa, G. W. P., Dewi, H. A., Tjahjana, L., Bruno, A., Birowosuto, M. D., Wang, H., Mathews, N. & Mhaisalkar, S. (2020). Disordered polymer antireflective coating for improved perovskite photovoltaics. ACS Photonics, 7(8), 1971-1977.
Journal: ACS Photonics 
Abstract: Light management through low index medium, such as antireflective coating (ARC) provides practical solution to improve the efficiency of photovoltaics. However, a brute-force development of photonic structure on ARC is not necessarily useful, because of random scattering associated with impediment of light transmission. Here, we leverage the concept of disorder, rather than random, structured on ARC for improving efficiency without modifying original architecture of thin-film photovoltaics. We demonstrate a disordered polymer that leads to a total reflectance of 5% while demonstrating a high transmission of 94% across 300 to 820 nm wavelength. Next, we find that the arrangement of disordered points and line arrays constructing the polymer seems to be the key to control bandwidth performance of the ARC. Finally, we apply this into Cs0.05(MA0.17FA0.83)0.95Pb(I0.83Br0.17)3 perovskite, and through experiments with wave-optics and full-device simulation, show a 1.6-fold absorption gain leading to 19.59% power-conversion-efficiency by the disordered ARC.
ISSN: 2330-4022
DOI: 10.1021/acsphotonics.0c00805
Rights: This document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Photonics, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see
Fulltext Permission: embargo_20210819
Fulltext Availability: With Fulltext
Appears in Collections:ERI@N Journal Articles

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